3938972947

Names of 3938972947

• Cardinal: 3938972947 can be written as Three billion, nine hundred thirty-eight million, nine hundred seventy-two thousand, nine hundred forty-seven.

Scientific notation

• Scientific notation: 3.938972947 × 10⁹

Factors of 3938972947

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 254

Divisors of 3938972947

• Number of divisors d(n): 96
• Complete list of divisors:
  1 7 13 17 49 61 67 89 91 119 221 427 469 623 637 793 833 871 1037 1139 1157 1513 1547 2989 3283 4087 4361 5429 5551 5963 6097 7259 7973 8099 10591 10829 13481 14807 19669 28609 38003 38857 41741 42679 50813 53131 55811 56693 69479 70577 74137 77519 92293 94367 101371 103649 137683 200263 266021 292187 363743 371917 486353 494039 542633 646051 660569 709597 725543 903227 963781 1199809 1317823 2546201 2603419 3404471 3458273 3798431 4522357 4728659 4967179 6183631 6322589 8398663 9224761 17823407 33100613 43285417 44258123 58790641 64573327 80387203 231704291 302997919 562710421 3938972947
• Sum of all divisors σ(n): 5450276160
• Sum of proper divisors (its aliquot sum) s(n): 1511303213
• 3938972947 is a deficient number, because the sum of its proper divisors (1511303213) is less than itself. Its deficiency is 2427669734

Bases of 3938972947

• Binary: 11101010110001111111010100010011₂
• Hexadecimal: 0xEAC7F513
• Base-36: 1T55UZ7

Squares and roots of 3938972947

• 3938972947 squared (3938972947²) is 15515507877197864809
• 3938972947 cubed (3938972947³) is 61115165787247787648814322123
• The square root of 3938972947 is 62761.2376152669
• The cube root of 3938972947 is 1579.2867777855

Scales and comparisons

• 3,938,972,947 seconds is equal to 125 years, 12 weeks, 5 days, 23 hours, 9 minutes, 7 seconds.
• To count from 1 to 3,938,972,947 would take you about two hundred fifty years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 3938972947 cubic inches would be around 131.6 feet tall.

Recreational maths with 3938972947

• 3938972947 backwards is 7492798393
• 3938972947 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 3938972947's digits is 61
• More coming soon!